Mate, great truck! I have always loved these back home and even though Holden(GM) have a Colorado down here in Australia, they still are not as cool as the Chevy. You have convinced me to ditch the idea of setting up my Grand Cherokee and let the wife have it while I get the Holden Colorado and setting it up like yours. An Aussie version.
I love what you have done with the back, but it appears that you cant have an annex with your RTT since it is so low and not on the roof. Am I correct?
Well done mate. Keep posting pics and updates.